<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <ul id="list"></ul>

    <script>
        var arr = [
            { "name": "小明", "age": 12, "sex": "男" },
            { "name": "小红", "age": 11, "sex": "女" },
            { "name": "小强", "age": 13, "sex": "男" }
        ];

        var list = document.getElementById('list');

        // 遍历arr数组，每遍历一项，就以字符串的视角将HTML字符串添加到list中
        for (let i = 0; i < arr.length; i++) {
            list.innerHTML += [
                '<li>',
                '    <div class="hd">' + arr[i].name + '的信息</div>',
                '    <div class="bd">',
                '        <p>姓名：' + arr[i].name + '</p>',
                '        <p>年龄：' + arr[i].age  + '</p>',
                '        <p>性别：' + arr[i].sex + '</p>',
                '    </div>',
                '</li>'
            ].join('')
        }
 
    </script>
</body>

</html>